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| Number | Title | Issue Date |
| 8008515 | Catalyst for partial oxidation of olefin, preparation method thereof, and process for preparing alkylene oxide A catalyst for partial oxidation of olefin, which comprises silver or silver oxide and an alkali metal or a compound thereof supported on an α-alumina carrier containing silicon or a compound thereof, wherein the silicon or the compound thereof exists at a position... | 08/30/2011 |
| 7820840 | Epoxidation catalyst and process Disclosed herein is a catalytic method of converting alkenes to epoxides. This method generally includes reacting alkenes with oxygen in the presence of a specific silver catalyst under conditions suitable to produce a yield of the epoxides. The specific silver cata... | 10/26/2010 |
| 7741499 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 06/22/2010 |
| 7700791 | Exothermic reaction system A reactor and heat exchanger assembly is provided with the heat exchanger integrally affixed to the reactor exit head and adapted to immediately cool reactor gases from the reactor. ... | 04/20/2010 |
| 7696368 | Start-up of high selectivity catalysts in olefin oxide plants A method to achieve a controlled start-up temperature of an expoxidation process which exceeds the maximum achievable temperature of the epoxidation reactor relative to using an external heat source. The method of the present invention employs an oxidation reaction ... | 04/13/2010 |
| 7615655 | Process for the production of alkylene oxide using a gas-phase promoter system An improved process for the manufacture of ethylene oxide through the epoxidation of ethylene using a catalyst comprising silver and at least one efficiency-enhancing salt of a member of a redox-half reaction pair. Added to the epoxidation reaction is a two-componen... | 11/10/2009 |
| 7560577 | Catalyst for production of ethylene oxide and method for production of ethylene oxide A catalyst that enables to produce ethylene oxide in a high selectivity and a method for the production of ethylene oxide using the catalyst are provided. In the catalyst for the production of ethylene oxide, wherein the catalyst component is supported by a carrier,... | 07/14/2009 |
| 7550611 | Carbon nanochips as catalyst supports for metals and metal oxides High temperature treatment of graphite nanofibers to convert the materials to carbon nanochips and thereby enhance their performance as support media for metal catalytic particles. The carbon nanochips are suitable for supports for metal and metal oxide particles to... | 06/23/2009 |
| 7538235 | Process for preparing a catalyst, the catalyst, and a use of the catalyst A process for preparing an epoxidation catalyst comprising silver and a high-selectivity dopant on a support, which process comprises depositing a base having a pKb of at most 3.5 when measured in water at 25° C., on th... | 05/26/2009 |
| 7507844 | Nanometer scale restructuring of alumina carrier surface and catalysts for the production of alkene oxides A carrier and a catalyst useful for the oxidation of ethylene to ethylene oxide which uses the carrier. The carrier is composed of an inert, refractory solid support such as alpha alumina and has a surface exhibiting a plurality of nanometer scale protrusions projec... | 03/24/2009 |
| 7504525 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 03/17/2009 |
| 7439375 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 10/21/2008 |
| 7381675 | Direct epoxidation catalyst A catalyst comprising a noble metal supported on a diatomaceous earth and a transition metal zeolite is disclosed. The catalyst is used in an epoxidation process comprising reacting an olefin, hydrogen, and oxygen. The diatomaceous earth is readily available and may... | 06/03/2008 |
| 7365217 | Oxidation process A process is disclosed for reacting an olefin, hydrogen, and oxygen in a reactor in the presence of an epoxidation catalyst comprising a transition metal zeolite and a noble metal to produce a product stream comprising an epoxide and an alkane. The alkane is separat... | 04/29/2008 |
| 7348444 | Process for the production of an olefin oxide A process for the production of an olefin oxide, which process comprises reacting a feed comprising an olefin and oxygen in the presence of a silver-containing catalyst, wherein before the catalyst has reached an advanced stage of ageing the reaction temperature is ... | 03/25/2008 |
| 7326810 | Method for starting up reactor In the reaction of catalytic gas phase oxidation induced by the supply of at least a raw material to be oxidized and a molecular oxygen-containing gas to a reactor for catalytic gas phase oxidation, a method for starting up the reactor for catalytic gas phase oxidat... | 02/05/2008 |
| 7319156 | Process for producing olefin oxide There is disclosed a process for producing an olefin oxide, which is characterized by reacting an olefin with oxygen in the presence of a silver catalyst and 0.2 mole or more of water per mol of the olefin. ... | 01/15/2008 |
| 7294317 | Exothermic reaction system A reactor and heat exchanger assembly is provided with the heat exchanger integrally affixed to the reactor exit head and adapted to immediately cool reactor gases from the reactor. ... | 11/13/2007 |
| 7259129 | Silver-containing catalysts, the manufacture of such silver-containing catalysts, and the use thereof A high activity and high selectivity silver catalyst comprising silver and, optionally, one or more promoters supported on a suitable support material having the form of a shaped agglomerate. The structure of the shaped agglomerate is that of a hollow cylinder havin... | 08/21/2007 |
| 7247600 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 07/24/2007 |
| 7238817 | Direct epoxidation process A process is disclosed for reacting an olefin, hydrogen, and oxygen in a reactor in the presence of a catalyst comprising a transition metal zeolite and a noble metal to produce a reaction mixture comprising an epoxide and acidic byproducts. A portion of the reactio... | 07/03/2007 |
| 7235677 | Method of improving the operation of an existing ethylene oxide manufacturing process and system Described is a method of improving the process and operation of an existing system for manufacturing ethylene oxide. The ethylene oxide manufacturing system includes an epoxidation reactor system containing a volume of high activity epoxidation catalyst. The method ... | 06/26/2007 |
| 7232918 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 06/19/2007 |
| 7232786 | Catalyst composition There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate n... | 06/19/2007 |
| 7193094 | Process and systems for the epoxidation of an olefin A process for the epoxidation of an olefin, which process comprises reacting a feed comprising the olefin, oxygen and a reaction modifier in the presence of a highly selective silver-based catalyst at a reaction temperature T, and with the reaction modifier being pr... | 03/20/2007 |
| 7153985 | Ethylene oxide production A process for the formation of ethylene oxide wherein the presence of at least one hydrocarbon having four carbon atoms per molecule in the recycle loop gas of the process is used as an indicator of impending post-ignition conditions. ... | 12/26/2006 |
| 7153987 | Process for making silver based epoxidation catalysts and process for preparing an olefin oxide The invention relates to a process for preparing a catalyst which involves (a) preparing a paste having a uniform mixture of at least one alkaline earth metal carbonate; a liquid medium; a silver bonding additive; and, at least one extrusion aid and/or optionally a ... | 12/26/2006 |
| 7148365 | Process for preparing 5-bromo-2,2-difluorobenzo-1,3-dioxoles The invention relates to a process for preparing 5-bromo-2,2-difluorobenzo-1,3-dioxoles and to the use thereof for preparing medicaments and crop protection agents. ... | 12/12/2006 |
| 7132555 | Rod-shaped inserts in reactor tubes A process for catalytically reacting a fluid reactant mixture in a multi-tubular reactor system to form a fluid product, whereby the reactant mixture is led through at least one reactor tube containing a fixed bed of solid particulate catalyst and surrounded by a he... | 11/07/2006 |
| 7122491 | Method of increasing the lifetime of a hydro-oxidation catalyst A method of increasing the lifetime of a hydro-oxidation catalyst comprising, preferably, gold, silver, or mixtures thereof, and optionally one or more promoters, on a titanium-containing support, such as a titanosilicate or titanium dispersed on silica. The method ... | 10/17/2006 |
| 7102022 | Method for the start-up of an epoxidation process and a process for the epoxidation of an olefin A method for the start-up of a process for the epoxidation of an olefin, which method comprises contacting a catalyst bed comprising a silver-based highly selective epoxidation catalyst, or a precursor of the catalyst comprising the silver in cationic f... | 09/05/2006 |
| 7091386 | Method for facilitating catalyzed oxidation reactions, device for facilitating catalyzed oxidation reactions A catalytic process for the oxidation of organic. Oxygen is loaded into a metal foil by heating the foil while in contact with an oxygen-containing fluid. After cooling the oxygen-activated foil to room temperature, oxygen diffuses through the foil and oxidizes reac... | 08/15/2006 |
| 7049451 | Carrier of catalyst for production of epoxide, catalyst for production of epoxide, and method for production of epoxide A carrier for use in the catalyst for the production of an epoxide is obtained by preparing a carrier precursor containing (a) α-alumina, (b) silicon or a compound thereof, and (c) at least one element selected from the class consisting of germanium, tin, lead, pho... | 05/23/2006 |
| 6963016 | Process for the synthesis of highly active modified carbon supported palladium catalyst The present invention relates to a process for the synthesis of highly active modified carbon supported palladium catalyst by simultaneously impregnating activated carbon with a palladium precursor and an aluminium precursor. The carbon supported palladium catalyst ... | 11/08/2005 |
| 6908866 | Epitaxial and polycrystalline growth of Si1-x-yGexCy and Si1-yCy alloy layers on Si by UHV-CVD A method and apparatus for depositing single crystal, epitaxial films of silicon carbon and silicon germanium carbon on a plurality of substrates in a hot wall, isothermal UHV-CVD system is described. In particular, a multiple wafer low temperature growth technique ... | 06/21/2005 |
| 6906208 | Mesoporous material and use thereof for the selective oxidation of organic compounds A material especially useful for the selective oxidation of hydrocarbons and other organic compounds includes a non-crystalline, porous inorganic oxide having at least 97 volume percent mesopores based on micropores and mesopores, and at least one catalytically acti... | 06/14/2005 |
| 6787656 | Catalyst for production of ethylene oxide, method for production thereof, and method for production of ethylene oxide by the use of the catalyst A catalyst for gas phase oxidation of ethylene which excels in selectivity and life performance, a method for the production of the catalyst and a method for the production of ethylene oxide by the use of the catalyst are disclosed. Specifically, the catalyst for th... | 09/07/2004 |
| 6762311 | Ethylene oxide catalyst A silver catalyst for ethylene oxidation to ethylene oxide is provided containing a promoter combination consisting of critical amounts of an alkali metal component and a sulfur component, the catalyst being essentially free of rhenium and transition metal component... | 07/13/2004 |
| 6750173 | Ethylene oxide catalyst The invention relates to an ethylene oxide catalyst comprised of silver deposited on an alumina carrier which has been treated to remove at least 25% of the surface sodium ions and replace the removed sodium ions with up to 10 ppm of lithium ions and to the preparat... | 06/15/2004 |
| 6717001 | Process for operating the epoxidation of ethylene A process for the vapor phase oxidation of ethylene to ethylene oxide, which process involves reacting a reaction mixture having ethylene and oxygen in the presence of a supported highly selective silver-based catalyst by: operating at an initial operation phase whe... | 04/06/2004 |
